Improvement in self-lubricating boisters for spinning-machines



V M: P. WILMARTH.

Self Lubricating Bolster for Spinning Machinesi Patented, July 7, 1863.

. .n i g 1 I 1 UNITED STATES PATENT OFFICE.

MOSES P. WILMARTH, OF SMITHFIELD, RHODE ISLAND.

IMPROVEMENT lN SELF-LUBRICATING BOISTERS FOR SPINNING-MACHINES.

Specification forming part of Letters Patent No. 39,190, dated July 7, 1863.

To all whom it may concern.-

Be it known that I, Mosns P. WILMARTH, of Smithfield, in the State of Rhode Island, haveinvented a new and useful Improvement in Bolsters for Spindles; and I do hereby declare that the following specification, taken in connection with the drawings, making a part of the same, is a full, clear, and exact description thereof.

Figure 1 is a longitudinal section in a plane through the axis of the spindle and bolster. Figs. 2, 3, 4, 5, and 6 are detailed parts, to be referred to hereinafter.

In the accompanying drawings, A, Fig. 1, represents a spindle, and D D the bolster within which the spindle runs. The upper end of the bolster is made with an annular recess or cavity, 0, and is surmounted by a cap, 0, Figs. 1 and 3. This cap has upon its upper surface a concave channel, 6, in which is an aperture, 0. In the annular recess 0 is placed a disk, E, of some fibrous material-as, forinstance, woolen cloth-havin g a hole in the center toaccommodatethespindle. Thisdisk, when in position, has its outer edge, 9, resting on the bottom of the recess 0, and its inner edge, f, in contact with the spindle. (This position of the disk is not shown in the drawings, Fig. 1 representing it in such way as to show the recess 0 plainly.)

Instead of the disk of cloth, a circular wick or other absorbent may be used, as the office of the disk is to convey the oil to the bearing of the spindle.

It is obvious that when oil is pou ed into the channel 6, it will flow through the aperture 0 of the cap 0, and saturate the disk E or other absorbent. Any excess of oil will be collected at the bottom of the annular recess 0, from whence by capillary attraction it can be conveyed to the bearing of the spindle.

In the Letters Patent granted to E. N. Steere, of Providence, Rhode Island, January 21, 1862, a spindle-bolster is described which has an annular recess somewhat like the one here shown, but having passages near the bottom, through which it is intended that the oil shall be transmitted to the spindle by means of an absorbent which is placed in the recess. This device is defective from the fact that the absorbent is prevented by the structure of the bolster from coming in contact with the spindle, and the quantity of oil which can be conveyed to to the bearing is necessarily very small; besides, the absorbent itself, being unprotected, is soon rendered foul from the dust which it collects.

I do not claim regulating the supply of oil or other lubricating material to a hearing by means of capillary attraction.

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

The arrangement of the cap (3 with the absorbent E and annular recess a, or their equivalents, substantially as described, for the purposes specified.

MOSES P. WILMARIH.

Witnesses:

BENJ. F. THURsToN, STEPHEN A. OooKE, Jr 

